Time-frequency analysis of heart sounds before and after angioplasty

Author

Tinati, M.A. ; Bouzerdoum, A. ; Mazumdar, J. ; Mahar, L.J.

Author_Institution

Dept. of Electr. & Electron. Eng., Adelaide Univ., SA, Australia

Volume

1

fYear

1997

fDate

2-4 Jul 1997

Firstpage

75

Abstract

Heart sounds have been recorded from patients with coronary artery disease before and after angioplasty in the cardiology department of the Royal Adelaide Hospital. We present an algorithm to decompose the recorded signals to beat cycles synchronized with electrocardiogram (ECG) and detect the most correlated cycles. Time-frequency analysis is carried out on the isolated beat cycles, and another algorithm is used to detect local maxima in the time-frequency plane. The detected maxima are then compared before and after angioplasty

Keywords

correlation methods; echocardiography; medical signal processing; patient diagnosis; signal detection; synchronisation; time-frequency analysis; ECG; Royal Adelaide Hospital; algorithm; angioplasty; coronary artery disease; correlated cycles detection; electrocardiogram; heart sounds; local maxima; patients; recorded signals decomposition; synchronized beat cycles; time-frequency analysis; Acoustical engineering; Angioplasty; Cardiology; Coronary arteriosclerosis; Electrocardiography; Frequency domain analysis; Heart; Hospitals; Signal analysis; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on

Conference_Location

Santorini

Print_ISBN

0-7803-4137-6

Type

conf

DOI

10.1109/ICDSP.1997.627972

Filename

627972